Steam-boiler.



No. 745,043. PATENTBD NOV. 2-4, 1903. I W. DOBLER.

STEAM BOILER.

APPLICATION FILED JULY 3, 1903. F0 MODEL." 4 SHEETS-SHEET J1.

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PATENTED NOV. 24, 1903.

W. DOBLER.

STEAM BOILER.

APPLICATION FILED JULY 3,1903.

4 SHE N0 MODEL.

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PATEN'I'ED NOV. 24, 1903. W. DOBLER. STEAM BOILER.

APPLICATION FILED 'JULY s, 1903.

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No. 745,043. I PATENTED NOV. 24, 1903. W. DOBLER.

STEAM BOILER.

APPLICATION FILED JULY 3, 1903.

N0 MODEL. 4 SHEETS-SHEET 4:.

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PATIENT (lumen,

STEAWl BOILER.

SPECIFICATION forming part of Letters Patent No. 745,043, dated November 24:, 1903.

Application filed July 3, 1903. Serial No. 164,216. (No odel.)

To all whom, it may concern.-

Be it known that I, WILLIAM DOBLER, a citizen of the United States, and a resident of Sumner, in the county of Pierce and State of Washington, have invented new and useful Improvements in Steam-Boilers, of which the following is a full, clear, and exact descripwhereby the steam-generating capacity of the entire boiler apparatus will be greatly increased.

A further object of the invention is to utilize the space between the boiler-shell and the sides of the Walls of the furnace or boiler stand for the reception of tubes or pipes designed to receive fluid from the source of supply, said pipes being heated by the fire in the fire-box of the furnace, the construction being such that the fluid in the pipes may be permanently heated and even transformed into steam to be conducted to the steam-dome arranged above the boiler-shell.

With the above recited objects and others of a similar nature in View the invention consists in the construction,combination, and

arrangement of parts, as is described in this specification, delineated in the accompanying drawings, and set forth in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a View in side elevation showing a furnace having a steam-dome mounted thereon and the connections between such steam-dome and the boiler. Fig. 2 is a longitudinal vertical sectional view taken through a furnace and boiler stand and showing the arrangement of the boiler therein. Fig. 3 is aview in front elevation of an apparatus embodying my improvements. Fig. 4: is a transverse vertical sectional view taken on the .be employed for assisting in supporting the boiler casing or shell. Mounted above the boiler-shell and connected therewith through the medium of pipes or tubes ff is a cylindrical steam chamber or drum F, said drum having an ordinary outlet-pipef At the rear of the boiler and suspended from the lower surface of the shell is an ordinary mud-drum or chamber Gr, having communication with the interior of the boiler through the medium of a conduit g, said drum being connected with a fluid-supply pipe H, which pipe supplies the water to the boiler, such fluid first entering the drum, and the pipe H is provided with a stop-cock or valve h, through the medium of which water entering the boiler may be regulated or entirely out off. As is ordinarily the case there is a considerable space left between the outer shell of the boiler and the side walls of the brick structure, which space is usually not utilized for any purpose, although the heat temperature of such space is very high, owing to the close proximity of the fire in the grate or fire-box D. It is to the utilization of this heated space that the present improvement particularly relates. In order to do this, I have placed within the aforesaid space and completely surrounding the boiler on three sides a seriesof pipes, such pipes comprising a transverse back tier I, said tier comprising the parallel pipest M M, the ends of these pipes extending through the structure or side walls of the furnace.

Extending along the sides of the boiler are the tiers of pipes J and K, the tier J comprising the parallel pipes jjjjj, while the tier on the opposite side comprises similar longitudinal pipes 7." 7c 70 7t, and, as will be noted, these pipes connect or communicate with the back tier of pipes I at right angles. At the termination of the front end of each pipe j and 70 there is placed a plug Z, which may be removed for the purpose of permitting the pipe to be cleaned, similar plugs m being arranged in the ends of the back transverse pipes t'. Water is admitted to the series of pipes from the mud-drum through the medium of a small connecting-pipe n, which connects with the cylindrical drum or T connection 0, from which drum or T extend the pipes 0 0 o 0 0, there being one pipe connecting with each member of the series or tiers of pipes t', each of said pipes 0 having a valve 0 therein for the purpose of regulating or shutting off the supply of water from the drum. A second series of elbow-pipes comprising the members 1919p 19 p are connected with a similar T connection P, which connection in turn communicates with the steam-drum on top of the boiler through the medium of the steam-pipe Q. It is further to be noted that the arrangement just described is duplicated-that is to say, there are such pipe connections at the rear. on each side of the boiler, as designated by the numerals 5 and 6. Similarly at the front end of the boiler there is connected with the side pipes j and 7s a plurality of vertical elbow-pipesj and 70 having valves 3' and 70 said pipes j and 70 communicating with the T or pipe connections R and S, which connections in turn communicate with the steamdrum F at the front end thereof through themedium of the steam-pipe T.

From the above description, taken in connection with the accompanying drawings, the construction and operation of the apparatus will be readily apparent. Water flowing into the mud-drum is admitted to the rear pipes & through the medium of the pipes 0, and from the pipes 2' water flows through the side pipes, being heated in its passage therethrough, receiving the same or greater degree of heat than the water in the boiler, and this water when heated will circulate through the several pipes andinto the boiler, thereby utilizing the action of the cold-water supply passing directly into the boiler. The steam generated in the side and back pipes will pass into the steanrdrum through the steam-pipes Q and T.

If desired, connections may be made to force all the water-supply through the pipes before it is allowed to enter the boiler, thereby bringing the water into contact with the greatest heating-surface obtainable. To do this, connections could be made at the forward end of the boiler the same as at the side when the connection with the mud-drum is made, and the supply-pipe can be connected with the forward end and the fluid forced through the side pipes into the mud-drum.

It will be observed that numerous advan tages other than those mentioned are incident to my improvements-such, for instance, as the convenience in taking out and removing the damaged pipes and in cleaning the separate tiers of pipes, as Well as the extended heating-surface which is attainable.

It is to be noted that this system of furnace permits one member of the series or tiers of pipes to be readily shut off should such memher be burned out or otherwise damaged. The improvement is also as applicable to a construction havinga plurality of boilers as it is to a single boiler.

While I have shown and herein described one embodiment of my invention, I wish it to be understood that I do not limit myself to all the precise details of construction shown herein, as there may be modifications in some respects without departing from the essential features of the invention or sacrificing any of the advantages thereof.

Having thus described my invention, I claim as new and desire to secure by Letters Batent 1. The combination of a furnace, a boiler mounted therein, a space being left between the boiler and the walls of the furnace, a series of pipes extending longitudinally in the space between the side of the boiler and the side of the furnace, back pipes connected with said side pipes, means for admitting fluid to the back and side pipes, a steam-drum mounted above the boiler and connected therewith, and connections between the side and rear pipes and the steam-drum, substantially as set forth.

2. The combination of a furnace, a boiler mounted therein, pipes extending longitudinally of each side of the boiler in the space between the boiler and the side walls of the furnace, pipes extending transversely of the rear of the boiler and connecting the side pipes, a mud-drum for said boiler, means for admitting fluid to the mud-drum, pipe connections between the mud-drum and the firstmentioned pipes, to admit water to the side and rear pipes, valves for said connections between the mud-drum and the pipes, a steam drum or chamber mounted above the boiler and communicating therewith, and pipe connections between the side and rear pipes and the steam-drum, substantially as set forth.

3. The combination of a furnace, a boiler mounted therein, pipes extending longitudinally in the space at each side of the boiler between the boiler and side walls-of the furnace, rear pipes connecting said side pipes, removable plugs for the ends of the rear and side pipes, means for admitting fluid to such rear and side pipes, and means for admitting such fluid to the boiler, substantially as set forth.

4. The combination of a furnace, a boiler mounted therein, a plurality of pipes occupying the space between the walls of the furnaee and the sides and rear of the boiler, a the steam-drum, and valves for the latter conmud-drnm for said boiler, means for admitnections, substantially as set forth. ting water to the mud-drum, valve-pipes con- In testimony whereof I have signed my necting the mud-drum with the first-menname to this specification in the presence of 5 tioned pipes, a steam-drum mounted above two subscribing witnesses.

and connected with the boiler, pipe connec- J tions between the pipes and the space at the WILLIAM DOBLER' rear of the boiler and said steam-drum, valves Witnesses: for such connections, pipe connections be- LOU DOBLER, IO tween the pipes at the side of the boiler and GORA F. DOBLER, 

